CAS 201996-57-8 appears in our catalog under these names: 1'-13CCytidine, Cytidine-13C, 99.0%, 1'-13CCytidine, min. 95 %, 1 mg, 1'-13CCytidine, min. 95 %, 2 mg, 1'-13CCytidine, min. 95 %, 5 mg. Offered by: Biosynth, MedChemExpress, Roth. Available pack sizes: 5mg, 2mg, 10mg, 25mg, 100 mg, 25 mg, 5 mg, 50 mg.